Drier.



PATENTED AUG. 25, 1903.-

` K. P. snow.

DRIER.- l

APPLICATION FILED FEB. 13, 1902.

no MonnL.

y thereof particularly relating to that class of` UNITED STATES Patented August 25, 1903.

PATENT OFFICE.A

KARL E. snow, or CLEVELAND, oHio, AssrGNoR ITo c. o. BARTLETT aco.

omen.

SPECIFICATION forming part of Letters Patent No. 737,292, dated August 25, 1903. Application led February 13, 1902.l Serial No. 93,877. (Nomodel To aZZ whom it' may concern;

Beit known that I, KARL F. SNOW, a citizen of the United States, and a resident of Cleveland, county of Cuyahoga,and State of Ohio, have invented a new and useful Improvement in Driers, of which the following is a specification, the principle of the invention being herein explained and the best mode in which I have contemplated applying that principle so as to distinguish it from other inventions.

My invention relates to driers, one feature driers in which double side walls and a double bottom are used, which form a steam or heating chamber entirely separate from the drying-chamber. In driers of this character heretofore used theV bottom and lateral inclosing portions of the drying-receptacle have been so constructed as to necessitate practically a rebuilding of the entire structure when it became necessary to remove the inner bottom plate when such removal was required by reason of the ultimate destruction of such plate resulting from continued use.

One object of my invention is hence to provide a construction whereby such inner bottom plate may be removed and replaced by another in an economical manner.

A second object ofr-such-invention is to provide means for effecting a continuous iiow of atmospheric air over the contents of the drying-receptacle and'. a corresponding c on-` -tinuous withdrawal of such air and the gases or vapors emanating from such contents.v

A third object' is to provide improved means for agitating such contents to expose all parts thereof to thedrying action of the receptaclesurface and of the aircurrent above mentioned.

The annexed drawings and the following description set forth in detail certain mechanism embodying theinvention, suchvdisclosed means constituting but one of the various mechanical forms in which the principle- Adrical in form, and its lateral inclosing portionl A consists of two parallel plates a. a, bolted at the top and'bottom to the lateralv surface of an upper separating frame-ring a and to a lower separating frame-ring a2, respectively. Studs as connect the plates at intermediate points, as shown in FiglV II. The

cover-plate at of the receptacle is bolted to the upper surface of frame-ring a'. The lower frame-ring a2 projects'some'what below the lower edges of the plates an, as shown.

` Two parallel bottom plates a5' 'a5 are bolted to the upper and lower surfaces, respectively, of a lower or bottom frame-ring a6, the edges of the plates lying intermediately of the in-v ner and outer edges of the ring, whereby a free strip or surface is left around and adjacent to the periphery of the ring. Said ring is bolted to the'lower surface of fram'ering a2, such described free surface contacting such lower surface, as shown.- Studs a7 connect such two plates at intermediate points. The steam or heating chamber so formed is suitably connected with a source of steam or heat supply.

When it is desired to replace the upper plate (15, it is only necessary to remove the bolts securing frame-ring a6, thereby disconnecting the entire bottom. The upper plates may then ybe removed without disturbing the lower, such removal hence avoiding the necessity of disturbingthe integrity of the latleral inclosing portion A.

In the top or cover plate odiare formed a series of openings a8, controlled ,by valves a9. The openings are preferably of segmental form, as shown, and lthe valves of the wellknownl disk form having alternate segmental openings and webs,wh ereby by rotating the disk about a central axis theV openings as "may be varied 4in size and the admission of atmospheric air thereby regulated.h At a suitable location in such topplate is formed another opening, which connects with an exhaust-blower B, Fig. I, `rotated-by suitable means. (Not shown.)

material and in consequence, as will be readily understood, greatly facilitates the drying operation.

Through the center of the top plate and mounted in suitable bearings c and c' is a vertical shaft C, vrotated by means of suitable beveled gears c2 and a driving-pulley cs, at the bottom of which are secured two horizontal diametrically-located arms c4 c4. These arms revolve near to and parallel with the contiguous bottom plate, and their respective outer ends are provided with plows C', having a horizontal lower edge c5. These ploivs carry material in their paths upwardly and discharge it toward the center of the receptacle, the arms o4 c4 constantly moving the material outwardly into such paths. The material is thus kept agitated, so as to give it all an opportunity to become subjected to the heated bottom and lateral receptacle surfaces and the air-current above, thus effecting the dry' ing operation in a substantially uniform manner.

Other modes of applying the principle of my invention may be employed instead of the one explained, change being made as regards the mechanism herein disclosed provided the means stated by any one of the following claims or the equivalent of such-stated means be employed.

I therefore particularly point out and distinctly claim as my invention*- l. A drying-receptacle comprising the combination of a lateral inclosing portion, a bot- Y tom comprising an outer peripheral frame and two plates respectively secured to the upper and lower surfaces of such frame, the periphery of the upper plate terminating intermediately of the inner and outer edges of said upper surface whereby the peripheral portion of the latter is left free, said free surface being secured to the bottom surface of said lateral inclosing portion, and a suitable cover.

2. Adrying-receptacle comprising the combination of a lateral inclosing portion consisting of an upper and lower frame and two plates secured respectively to the inner and outer portions of such frame; a bottom portion consisting of a frame and two plates secured to the upper and lower surfaces thereof respectively, the upper plate terminating intermediately of the inner and outer frame edges whereby a portion of the upper frame surface is left free, such free surface being secured to the under surface of the lower frame of the lateral inclosing portion; and a suitable cover.

Signed by me this 5th day of February,

KARL F. SNOW. Attest:

A. E. MERKEL, D. T. DAVIEs. 

